Meaning of atomic number 90 in English

Table of contents
  1. Pronunciation
  2. Noun
    1. Definitions

  1. Pronunciation

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    UK accent

  1. Noun

    atomic number 90

    Definitions

    1. a soft silvery-white tetravalent radioactive metallic element

    Examples

    • « isotope 232 is used as a power source in nuclear reactors »
    • « occurs in thorite and in monazite sands »

    Derived terms

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